In lieu of props that often overwhelm and outshine your baby's beautiful face, I instead suggest including special gifts or accessories such as a hand-made blanket that will not only serve as a sentimental background, but also provide historical meaning to your portraits.
“Our portrait is the only thing I'd take with me if the house burned down (that and the engagement ring). I loved that you came to our house and showed off our home in its best light, so much more convenient with the little guy. My favorite meaningful thing that you encouraged us to think about were items that had meaning to us and have them in the photos. When we gave Aunt Gennie her Christmas card we could say "look, there's the blanket you made," and Grandma said "ohhh there's my quilt!"”